2. Total volume of water bound in icecaps and glaciers: 1.6% = 20,160,000,000,000,000 m³
3. Total volume of water in the oceans: 98% = 1,234,800,000,000,000,000 m³
4. Assume sea levels continue to rise at the same rate of 3.2 mm/yr by satellite altimetry (even though data indicates this is exaggerated and the rate is decelerating)
If all the ice in icecaps and glaciers melted, the total volume of water in the oceans would then be 1,254,960,000,000,000,000 m³, an increase of 1.6% from the present. Since the average depth of the oceans is 3790m, a 1.6% increase in volume would cause a sea level rise of 3790*.016 = 60.64m = 60640 mm. At the current rate of sea level rise over the past 18 years by satellite altimetry (a decelerating 3.2 mm/yr), half due to ice melt is 1.6 mm/year, thus it will only take 60640/1.6 = 37900 years until all the ice in glaciers and icecaps melt at the current rate. Add to the fact that the Greenland and Antarctica ice sheets are currently increasing in volume and we are overdue for another ice age, the time is further postponed if ever. Not to mention, fossil fuels will run out within 200 years or less.
peak of the last major ice age approximately 20,000 years ago. Although the rate of sea level rise has greatly decelerated over the past 6000 years, the rate over the entire 20000 year period is 6mm/year. Substituting .5*6 = 3 mm for 1.6 above yields 20213 years until all ice is melted. Note: melting sea ice causes no significant change in sea level due to Archimedes principle.